Last week, NASA announced that its flying observatory, SOFIA (short for Stratospheric Observatory for Infrared Astronomy) completed a study of a nearby planetary system that is very much like our solar system, centered on the star Epsilon Eridani, also known as Eps Eri.

Three of the planets in the Trappist-1 system are believed to be in the “habitable zone” for life: close enough to their star to melt ice but not so close that all the water evaporates. In other words, these planets might have liquid water at their surfaces.

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